Adjustable ship curve



July 30, 1946.

4 Is Z0 FIG.!

G. LATEUR 2,404,880

ADJUSTABLE SHIP CURVE Filed March 2'7, 1944 3AF|C5.3.

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IN V EN TOR. ms' wv Z. 47502 14 T T GENE Y5 Patented July 30, 1946UNITED STATES PATENTL'OFFICE i, ".2 Claims.

.The ipresent invention relates. to improveements in an,adjustableshipcurve, and .it con- .SiSts of-the.combinations, tonstructionsand arrangements hereinafter described andclaimed.

An object of my invention is to provide an adjustable. ship;curve whichis an improvement over my copending application on an adjustable shipcurve, Serial No. 520,349, filed January 29,

, .4944. I In the copending case I show a .base with 'ctWO parallelbars. and shoes mounted between .the bars andrslidable ;therealong. Aflexible ruling member is adjustably connected tothe shoes by extensiblemembers that maintainthe desired curve in the member. In the presentinvention I disclose a base comprising a single elongated. member.Sleeves are. slidablymounted A. further object of my invention is'toprovide.

a device of the type described in which the flexible rulingmember. isheld .atthe desired slant with respect to the paper on. which the shipcurve is to be drawn so; that .abetter defined r ruling edge will bepresented, along .which. the pencil or inking, pen may be movedwhendrawing the curve.

A. further object of my invention is to ,pro-

vide a devicegsimplein construction and. durable and efficient forthepurpose intended.

Other object and advantages willappear in the following specification,and the novel fea- -tures of ,the device will be. particularly pointedout in the appended claims.

My invention isillustrated in the accompanying drawing forming a partof; this..application, in which:

Figure 1 is a plan view of the device;

Figure 2 is an enlarged transverse section taken along the line 2-2 ofFigure 1;

Figure 2A is a transverse section through the flexible ruling member;

Figure 3 is an end view of a modified form of the invention;

Figure 3A shows another modified form of the device;

Figure 4 illustrates still another modified form of the invention;

Figure 5 is a sectional view through a slightly modified form of thedevice shown in Figure 4; r

Figure 6 is a plan view of Figure 5;

Figure 7 is a bottom plan view of a modified form of sleeve.

Figure 8 shows another modified form of the sleeve; and

. Figure 9 is an isometric view of another form of sleeve.

While I have shown only the preferred forms of my invention; it shouldbe understood that various "changes. or..modification may be madewithinthe-scope of-the appended claims without departing fromthespiritand scope of-the-invention.

In carrying out, my inventionl provide a base indicated generally at Aand this base has a flat underside .land a curved upper surface 2,

.see Figure 2.1,Thebase-A is -supported by rub- .ber sleeves 3,4 and seeFigure 1., that'supon the member and in turn; rotatably supportextensions that hold thesflexible. ruling member. in the desired shape.

. port the. base a slight. distance above the supporting surface 5.. Therubber sleeves prevent slippage of. the base :over the supportingsurface.

I show .fah-rflexible ruling member 3 in both Figures ,lwand 2,.and oneend of the member is secured to. the-base A "by a screw 1 that isthreaded; through an upright 8 carried by the base. .NutsHS and ID arethreaded on the screw .1 and hold thescrew against lateral movementwith-respect to thevupright 8. vNut- 9 also acts as .a-spacing memberbetween thehfiexiblerule .B and the, upright.

The flexible ruling member B has alength substantially coextensive withthe length ofthe .baseAand the, rule is anchored to the base at 30.

. for guiding a pencil or ,a ruling pen.- Each openinghas a countersunkrecess I3 in the rear wall l3a of the rule and a countersunk recess M inthe front wall Ma of the rule. A screw I5 is received in the opening Hand the screw has a head 16 that is received in the countersunk portionI4. A nut I1 is mounted on the screw and is received in the countersunkportion [3. In this way the screws are rigidly secured to the rule B. Itis possible to pivotally secure the screws to the rule in the samemanner shown in my copending application.

Still referring to Figure 2, it will be noted that the screw I5 isreceived in a threaded sleeve 18; The sleeve has a head l9 and an eyelet20 is rotatably mounted on the sleeve and bears against the head I9. Anouter threaded member 2| is screwed upon the sleeve l8 which is threadedon its exterior surface for this puras shown in Figure 1.

' lar parts.

pose. The outer member bears against the opposite side of the eyelet.

The eyelet has a shank 22 that is passed through the opening 23 formedin a tongue 24. The tongue extends from a sleeve or a shoe 25 thatslides along the base A. The shoe 25 is shaped to contact with thesurfaces l and 2 of the base and sufiicient friction is developedbetween the sleeve and the surfaces tohold the shoe in adjustedposition.

A nut 26, see Figure 4, is threaded upon the shank 22 ofthe eyelet 20and the nut bears against the top of the tongue 24. A second nut 21 isthreaded upon the lower portion of the shank and has a shoulder 28adapted to enter the opening 23 in the tongue and to contact with theunder surface of the nut 22%. Theconstruction is such that the eyelet isrotatably secured to the tongue and the screw can swing about thevertical axis of the shank 22. At the same time the screw l5 can beextended or retracted for moving the flexible rule B the desireddistance toward oraway from the base A. I

A number of the shoes 25and screws are provided and these are spacedalong thebase A, The screws [5 pivot on the shank 22 and they can beextended for giving the flexible ruling member B the desired curve, forexample, the curve illustrated in Figure 1.

In'Figu re 3 I show a, slightly modified form of the invention. In thisform the base C'is square in cross section and the shoes a are alsosquare.

supporting means for the screw l5 are the same,

so like reference numerals will be applied to simi- The supportingrubber members 29 for the base C hold the base so that a lower corner isspaced above the supporting surface.

struck up from the shoe portion as is true with the shoes 25, 25a and251), but instead is placed in a recess 30 formedin the shoeor sleeve25c and is welded or otherwise secured in the recess.

The form of the device shown in Figures 5 and 6 is similar to that shownin Figure 4 with the exception that the sleeve or shoe 3! is split as at32'and is more narrow in thickness. The

tongue 33 is of a thicker material and is welded or otherwise secured tothe sleeve. In-Figure '7 the tongue 3 1 is formed from a struckupportion from the sleeve 35. In all other respects the device shown inFigure 7 is the same as that shown in Figure 5.

It is possible to use a base E that is oval in cross section and in thisevent the shoe or sleeve 36 is also made oval. The sleeveor shoe carriesa tongue 31 for supporting the other parts of the device.

In Figure 9 I show an isometric view of a modified form of sleeve orshoe. In this view the sleeve 38 is larger than the base D and thesleeve has end members 39 that are curved toward each other and areprovided with recesses 49 for slidably receiving the sides of the baseD. The edges of the recesses are the sole contacting surfaces betweenthe sleeve and the base and this reduces friction. The end members 39have openings 4| which may receive ball-bearings (not shown), thatcanride on the sides of the base D for reducing the friction still further,if that. is desired.

I claim: I I

1. In a device of the type described, an elongated rigid base having acurved upper portion tongue and sleeve, an extensible member carried byeach connector, and a flexible ruling member carried by the extensiblemembers and being held in the desired shape by the extensible members.

2. In an adjustable ship curve, an elongated base, .a shoe slidabletherealong, an eye-piece rotatably carried by the shoe, a sleeverotatably carried by the eye-piece'and having its longitudinal axisswingable in a horizontal p1ane;the

' interior of the sleeve being threaded, a screw received in the sleeveand being longitudinally advanced or retracted as the sleeve isrotatedin one direction or the other in the eye-piece, and a flexible rulingmember secured to one end of the screw, said member having a countersunkopening for receiving the screw, said screw having a head receivable inthe countersunk opening, said member having an annular shoulder on theopposite side from the countersunk opening and being'aligned therewith,and a nut mounted on the screw and bearing against the shoulder.

GASTON L. LATEUR.

